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Free_Kalibri [48]

3 years ago

12

There are 20 people in a room, If they all shake each other's hands once and only once, HOW MANY handshakes are there altogether

?

2 answers:

vazorg [7]3 years ago

7 0

I thinkkkkk40 I think

Ann [662]3 years ago

5 0

Answer:380 Shakes

Step-by-step explanation:

first you need to figure out how many people are shaking the persons hand sou you do 20 x 16 which equals 380

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2 years ago

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PolarNik [594]

(7x+2)° = (9x–8)°

=>7x –9x = –8–2

=> –2x = –10

=> x = 10/2

=> x = 5

<ADB = (7x+2)°

= 7×5+2

= 37°

<BDC = (9x–8)°

= 9×5–8

= 45 –8

= 37°

<ADC = 37° + 37°

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LUCKY_DIMON [66]

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kondaur [170]

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$\frac{h(5)-h(3)}{5-3}$

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Answer:

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Step-by-step explanation:

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